A guide nozzle assembly that facilitates replacement

Abstract

This utility model relates to a guide nozzle device that is easy to replace. A positioning seat is provided at the upper end of the mounting base, and a guide nozzle body is housed within the positioning seat. The guide nozzle body is fixedly installed within the positioning seat. A positioning component is used to accurately position the positioning seat within the mounting base. The positioning seat and the mounting base are locked together by a locking component. At least two sets of locking components are provided to securely lock the positioning seat and the mounting base. The locking component includes a positioning sleeve and a locking device. The positioning sleeve is fixedly installed on the mounting base, and the locking device passes through the positioning seat, inserts into the positioning sleeve, and is rotated to fix it. This utility model, through the positioning component and locking component, allows for quick replacement of the guide nozzle body, improving replacement efficiency and ensuring installation accuracy.

Description

Technical Field

[0001] This utility model relates to the technical field of wire EDM machine tool processing equipment, and in particular to a guide nozzle device that is easy to replace. Background Technology

[0002] Wire EDM machines are devices that use the principle of electrical discharge to process workpieces. The guide tip plays a crucial role in the wire EDM process, guiding the electrode wire along a predetermined trajectory to ensure machining accuracy and surface quality. However, existing wire EDM guide tip devices have several shortcomings. Firstly, replacing the guide tip typically requires disassembling multiple components, making the operation complex, time-consuming, and labor-intensive, leading to excessive machine downtime and reduced production efficiency. Secondly, the positioning accuracy of the guide tip is difficult to guarantee; after replacement, positional deviations can easily occur, affecting machining accuracy and potentially damaging the electrode wire and workpiece. Furthermore, traditional guide tip devices have poor versatility; different specifications and models of guide tips require different installation structures, increasing inventory costs for equipment manufacturers and maintenance costs for users. Therefore, it is necessary to develop a guide tip device that is easy to replace, addressing these shortcomings. Utility Model Content

[0003] The purpose of this invention is to provide a guide nozzle device that is easy to replace. Through the positioning component and the locking component, the guide nozzle body can be quickly replaced, which improves the replacement efficiency and ensures the installation accuracy.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] This utility model discloses a guide nozzle device that is easy to replace, including a mounting base. A positioning seat is provided at the upper end of the mounting base, and the positioning seat is installed within the mounting base via a positioning assembly. A guide nozzle body is provided within the positioning seat and is fixedly installed within the positioning seat. The positioning assembly includes a positioning boss, a positioning groove, a limiting block, and a limiting slot. The positioning boss is located at the bottom of the positioning seat, and the positioning groove is located within the mounting base, with the positioning boss extending into the positioning groove. The limiting block is located on one side of the bottom of the positioning seat, and the limiting slot is located at a corresponding position on the upper surface of the mounting base, with the limiting block extending into the limiting slot. The positioning seat and the mounting base are locked together by a locking assembly. At least two sets of locking assemblies are provided to securely lock the positioning seat and the mounting base. Each locking assembly includes a positioning sleeve and a locking device. The positioning sleeve is fixedly installed on the mounting base, and the locking device passes through the positioning seat, inserts into the positioning sleeve, and is rotated to fix it.

[0006] Preferably, the positioning seat, the positioning boss, and the limiting block are fixed as an integral structure, and the mating surface of the positioning boss and the positioning groove is an inclined structure. This inclined structure facilitates the installation and disassembly of the positioning seat and also plays a guiding role during the installation process.

[0007] Preferably, the locking device includes a positioning post, a pivot pin, and a knob. The knob is fixedly connected to the upper end of the positioning post, forming an integral structure. The lower end of the positioning post is provided with a pivot pin, which passes through the center of the positioning post and is perpendicular to the positioning post. The pivot pin is fixedly connected to the positioning post. The lower end of the knob is provided with a fixing seat, through which the positioning post passes. A spring is fitted around the outer circumference of the positioning post. The spring is located inside the fixing seat and is used to provide buffering and preload force, making the locking device more stable when locked. The fixing seat is a hollow structure, and its upper and lower ends are slidably connected to the knob and the positioning post, respectively.

[0008] Preferably, the positioning sleeve includes a positioning hole, a waist-shaped groove, and a positioning slot. The positioning sleeve has a positioning hole at its center, which matches the positioning post. The circumference of the positioning hole has a waist-shaped groove for the pivot pin to pass through, and the waist-shaped groove is perpendicular to the positioning hole. The lower end of the positioning hole has a positioning slot for accommodating the pivot pin, and the positioning slot matches the pivot pin. A limiting bead is provided in the positioning slot, and the limiting bead extends out of the lower end face of the positioning slot. The height of the protruding part is less than the thickness of the pivot pin. The limiting bead is usually made of a material with a certain degree of elasticity. When the pivot pin rotates 90°, the limiting bead is squeezed and undergoes elastic deformation, thereby locking the pivot pin in the positioning slot and preventing it from loosening. There are four limiting beads, which are evenly distributed around the positioning slot.

[0009] Preferably, the upper end face of the positioning seat is provided with a through hole, which is used to match the positioning post and the rotating pin. The size of the through hole is adapted to the size of the positioning post and the rotating pin, so that the positioning post and the rotating pin can pass smoothly through the through hole. The inner diameter of the through hole is 0.1-0.3mm larger than the outer diameter of the positioning post to ensure a certain assembly clearance. The upper end of the through hole is provided with a tapered hole, which is used to accommodate the fixing seat.

[0010] Preferably, the lower end of the guide nozzle body is provided with a step, the step is engaged between the positioning seat and the mounting seat, the lower end face of the step abuts against the upper end face of the mounting seat, and the upper end face of the step abuts against the upper end face of the clearance groove in the positioning seat; a sealing ring made of rubber is provided at the assembly surface of the positioning seat and the guide nozzle body, the sealing ring is used to prevent liquid or impurities from entering the assembly gap between the positioning seat and the guide nozzle body, thereby improving the sealing performance and service life of the device.

[0011] Preferably, the positioning pin is inserted into the positioning hole, and the bottom surface of the positioning pin abuts against the bottom surface of the positioning hole to ensure accurate axial positioning of the positioning pin within the positioning hole and improve the locking stability of the locking device.

[0012] Compared with existing technologies, the beneficial technical effects of this utility model are as follows: The easily replaceable guide nozzle device of this utility model can accurately position the positioning seat within the mounting base through the positioning component. The positioning boss cooperates with the positioning groove, and the limiting block cooperates with the limiting slot; together, they effectively prevent the positioning seat from shaking and shifting within the mounting base, ensuring the positional accuracy of the guide nozzle body after installation, thereby improving positioning accuracy. The locking component can securely lock the positioning seat and the mounting base. The spring in the locking device provides buffering and preload, making the locking device more stable when locked, preventing changes in the guide nozzle position due to vibration or other factors during processing, further ensuring processing accuracy. Unlocking is achieved by turning a knob when replacing the guide nozzle, which is quick and convenient, eliminating the need for tedious adjustments and greatly saving time and manpower. Due to the ease of replacement, machine tool downtime caused by guide nozzle wear is reduced, improving production efficiency and reducing production costs. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] Figure 1 This is a top view of the easily replaceable guide nozzle device of this utility model;

[0015] Figure 2 This is a schematic diagram of the main cross-sectional structure of the easily replaceable guide nozzle device of this utility model;

[0016] Figure 3 This is a three-dimensional structural diagram of the mounting base and positioning sleeve of this utility model;

[0017] Figure 4 This is a three-dimensional structural diagram of the positioning seat and locking device of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Mounting base; 101. Positioning groove; 102. Limiting groove; 2. Positioning seat; 201. Positioning boss; 202. Limiting block; 203. Through hole; 204. Tapered hole; 3. Guide nozzle body; 4. Locking assembly; 41. Locking device; 411. Positioning pin; 412. Rotary pin; 413. Knob; 414. Fixing base; 415. Spring; 42. Positioning sleeve; 421. Positioning hole; 422. Waist-shaped groove; 423. Positioning groove; 424. Limiting bead. Detailed Implementation

[0019] The core of this invention is to provide a guide nozzle device that is easy to replace. Through the positioning component and the locking component, the guide nozzle body can be quickly replaced, which improves the replacement efficiency and ensures the installation accuracy.

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Refer to the attached diagram. Figure 1 This is a top view of the easily replaceable guide nozzle device of this utility model; Figure 2 This is a schematic diagram of the main cross-sectional structure of the easily replaceable guide nozzle device of this utility model; Figure 3 This is a three-dimensional structural diagram of the mounting base and positioning sleeve of this utility model; Figure 4 This is a three-dimensional structural diagram of the positioning seat and locking device of this utility model.

[0023] In one specific implementation, such as Figures 1-4 As shown, a replaceable guide nozzle device includes a mounting base 1, which serves as the mounting machine for the entire device and is fixed at a corresponding position on a wire cutting machine. A positioning seat 2 is provided at the upper end of the mounting base 1. The positioning seat 2 is installed within the mounting base 1 via a positioning assembly for precise positioning. A guide nozzle body 3 is provided within the positioning seat 2 and is fixedly installed therein for guiding the electrode wire during wire cutting. The positioning seat 2 and the mounting base 1 are locked together by a locking assembly 4. At least two sets of locking assemblies 4 are provided, preferably four sets, evenly installed around the positioning seat 2 to securely lock the positioning seat 2 and the mounting base 1. The locking assembly 4 includes a positioning sleeve 42 and a locking device 41. The positioning sleeve 42 is fixedly installed on the mounting base 1, and the locking device 41 passes through the positioning seat 2, inserts into the positioning sleeve 42, and is rotated to fix it.

[0024] In one specific implementation, such as Figures 1-4As shown, the positioning assembly includes a positioning boss 201, a positioning groove 101, a limiting block 202, and a limiting slot 102. The positioning boss 201 is located at the bottom of the positioning seat 2, and the positioning groove 101 is located inside the mounting base 1, with the positioning boss 201 extending into the positioning groove 101. The limiting block 202 is located on one side of the bottom of the positioning seat 2, and the limiting slot 102 is located at a corresponding position on the upper surface of the mounting base 1, with the limiting block 202 extending into the limiting slot 102. The positioning assembly is used to accurately position the positioning seat 2 within the mounting base 1. The positioning seat 2, the positioning boss 201, and the limiting block 202 are fixed as a single structure to enhance the overall strength and stability of the positioning seat 2. When installing the positioning seat 2, align the positioning boss 201 with the positioning groove 101 and the limiting block 202 with the limiting slot 102. Then, slowly lower the positioning seat 2 so that the positioning boss 201 extends into the positioning groove 101 and the limiting block 202 extends into the limiting slot 102. The mating surfaces of the positioning boss 201 and the positioning groove 101 are inclined. During installation, the inclined surfaces act as guides, facilitating the smooth installation of the positioning seat 2. At the same time, this inclined mating method can effectively prevent the positioning seat 2 from horizontally wobbling and shifting within the mounting seat 1, achieving precise positioning.

[0025] In one specific implementation, such as Figures 1-4 As shown, the locking device 41 includes a positioning pin 411, a pivot pin 412, and a knob 413. The knob 413 is fixedly connected to the upper end of the positioning pin 411, forming an integral structure for easy rotation by the operator. The lower end of the positioning pin 411 has a pivot pin 412, which passes through the center of the positioning pin 411 and is perpendicular to it. The pivot pin 412 is fixedly connected to the positioning pin 411. The lower end of the knob 413 has a fixing seat 414, through which the positioning pin 411 passes. A spring 415 is fitted around the outer circumference of the positioning pin 411 and is located inside the fixing seat 414. The spring 415 provides cushioning and preload, making the locking device 41 more stable when locked. The fixing seat 414 is a hollow structure, with its upper and lower ends slidably connected to the knob 413 and the positioning pin 411, respectively. When the knob 413 is operated, the fixed base 414 can slide up and down relative to the positioning post 411 and the knob 413.

[0026] In one specific implementation, such as Figures 1-4As shown, the positioning sleeve 42 includes a positioning hole 421, an oblong groove 422, and a positioning groove 423. The positioning sleeve 42 has a positioning hole 421 at its center, which matches the positioning post 411. An oblong groove 422 is provided around the circumference of the positioning hole 421 for the pivot pin 412 to pass through, and the oblong groove 422 is perpendicular to the positioning hole 421. A positioning groove 423 is provided at the lower end of the positioning hole 421 to accommodate the pivot pin 412, and the positioning groove 423 matches the pivot pin 412. A limiting bead 424 is provided inside the positioning groove 423, with a portion of the limiting bead 424 extending beyond the lower end face of the positioning groove 423. The height of the protruding part is less than the thickness of the pivot pin 412. The limiting bead 424 is usually made of a material with a certain degree of elasticity. When the pivot pin 412 rotates 90°, the limiting bead 424 is compressed and undergoes elastic deformation, thereby locking the pivot pin 412 in the positioning groove 423 to prevent it from loosening. There are four limiting beads 424, evenly distributed around the positioning groove 423, so that when the pivot pin 412 is at 0°, two beads are located on both sides of the pivot pin 412 in this state; when the pivot pin 412 rotates 90°, two beads are located on both sides of the pivot pin 412 in this state. This prevents the pivot pin 412 from rotating beyond the position of the waist-shaped groove when opening, making it inconvenient to remove.

[0027] In one specific implementation, such as Figures 1-4 As shown, the upper end face of the positioning seat 2 is provided with a through hole 203. The through hole 203 is used to match the positioning pin 411 and the rotating pin 412. The size of the through hole 203 is adapted to the size of the positioning pin 411 and the rotating pin 412, so that the positioning pin 411 and the rotating pin 412 can pass smoothly through the through hole 203. The inner diameter of the through hole 203 is 0.1-0.3mm larger than the outer diameter of the positioning pin 411 to ensure a certain assembly clearance. The upper end of the through hole 203 is provided with a tapered hole 204, which is used to accommodate the fixing seat 414. This facilitates the locking device 41 to pass through the positioning seat 2 and fix the positioning seat 2 and the mounting seat 1 together.

[0028] In one specific implementation, such as Figures 1-4 As shown, the lower end of the guide nozzle body 3 is provided with a step, which is fitted between the positioning seat 2 and the mounting seat 1. The lower end face of the step abuts against the upper end face of the mounting seat 1, and the upper end face of the step abuts against the upper end face of the relief groove in the positioning seat 2. A sealing ring made of rubber is provided at the assembly surface of the positioning seat 2 and the guide nozzle body 3. The sealing ring is used to prevent liquid or impurities from entering the assembly gap between the positioning seat 2 and the guide nozzle body 3, thereby improving the sealing performance and service life of the device.

[0029] In one specific implementation, such as Figures 1-4 As shown, the positioning pin 411 is inserted into the positioning hole 421, and the bottom surface of the positioning pin 411 abuts against the bottom surface of the positioning hole 421 to ensure that the axial positioning of the positioning pin 411 in the positioning hole 421 is accurate and to improve the locking stability of the locking device 41.

[0030] The operation of this easily replaceable guide nozzle device is as follows: During the wire EDM machining process, the electrode wire passes through the guide nozzle body 3, which guides the electrode wire to move along a predetermined trajectory to process the workpiece. Due to the precise positioning of the positioning component and the stable locking of the locking component 4, the guide nozzle body 3 can always maintain an accurate position, ensuring machining accuracy and surface quality. When it is necessary to replace the guide nozzle body 3, the knob 413 is rotated in the opposite direction, causing the positioning pin 411 and the rotating pin 412 to rotate 90° in the opposite direction within the positioning hole 421. The limiting bead 424 can limit the rotation angle, preventing the angle from being too large or too small, which would make it inconvenient for the rotating pin 412 to exit from the positioning groove 423 and enter the waist-shaped groove 422. At this time, the knob 413 is pulled upward to pull the locking device 41 out of the positioning sleeve 42, releasing the locking of the positioning seat 2 and the mounting seat 1. Then, the positioning seat 2 is taken out upward, the positioning boss 201 slides out of the positioning groove 101, and the limiting block 202 disengages from the limiting groove 102. Next, remove the guide nozzle body 3 from the positioning seat 2, reinstall the new guide nozzle body 3 according to the steps described above, then reinstall the positioning seat 2 onto the mounting seat 1. Finally, lock the positioning seat 2 and the mounting seat 1 together using the locking assembly 4 to complete the replacement of the guide nozzle body 3. The entire replacement process is quick and convenient, requiring no tedious adjustments, greatly saving time and manpower.

[0031] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0032] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A replaceable guide nozzle device, comprising a mounting base (1), characterized in that: The upper end of the mounting base (1) is provided with a positioning base (2), and the positioning base (2) is installed in the mounting base (1) by a positioning component; the positioning base (2) is provided with a guide nozzle body (3), and the guide nozzle body (3) is fixedly installed in the positioning base (2); the positioning component includes a positioning boss (201), a positioning groove (101), a limiting block (202), and a limiting slot (102). The positioning boss (201) is located at the bottom of the positioning base (2), and the positioning groove (101) is located in the mounting base (1). The positioning boss (201) extends into the positioning groove (101); the limiting block (202) is located in the mounting base (1). On one side of the bottom of the positioning seat (2), the limiting groove (102) is set at the corresponding position on the upper end face of the mounting seat (1), and the limiting block (202) extends into the limiting groove (102); the positioning seat (2) and the mounting seat (1) are locked together by a locking assembly (4), and the locking assembly (4) is provided with at least two sets for securing the positioning seat (2) and the mounting seat (1). The locking assembly (4) includes a positioning sleeve (42) and a locking device (41). The positioning sleeve (42) is fixedly installed on the mounting seat (1), and the locking device (41) passes through the positioning seat (2) and is inserted into the positioning sleeve (42) and rotated to fix it.

2. The easily replaceable guide nozzle device according to claim 1, characterized in that: The positioning seat (2), the positioning boss (201) and the limiting block (202) are fixed as an integral structure, and the mating surfaces of the positioning boss (201) and the positioning groove (101) are inclined surfaces.

3. The easily replaceable guide nozzle device according to claim 1, characterized in that: The locking device (41) includes a positioning post (411), a pivot pin (412), and a knob (413). The knob (413) is fixedly connected to the upper end of the positioning post (411) to form an integral structure. The lower end of the positioning post (411) is provided with a pivot pin (412). The pivot pin (412) passes through the center of the positioning post (411) and is perpendicular to the positioning post (411). The pivot pin (412) is fixedly connected to the positioning post (411). The lower end of the knob (413) is provided with a fixed seat (414), the positioning post (411) passes through the fixed seat (414), and a spring (415) is fitted on the outer circumference of the positioning post (411). The spring (415) is located inside the fixed seat (414). The fixed seat (414) has a hollow structure, and the upper and lower ends of the fixed seat (414) are slidably connected to the knob (413) and the positioning post (411) respectively.

4. The easily replaceable guide nozzle device according to claim 3, characterized in that: The positioning sleeve (42) includes a positioning hole (421), a waist-shaped groove (422), and a positioning groove (423). The positioning sleeve (42) has a positioning hole (421) at its center, which matches the positioning post (411). The positioning hole (421) has a waist-shaped groove (422) at its circumference for the pivot pin (412) to pass through, and the waist-shaped groove (422) is perpendicular to the positioning hole (421). The lower end of the positioning hole (421) has a positioning groove (423) for accommodating the pivot pin (412), and the positioning groove (423) matches the positioning post (411). The pivot pin (412) is matched; the positioning groove (423) is provided with a limiting bead (424), the limiting bead (424) extends out of the lower end face of the positioning groove (423), and the height of the extended part is less than the thickness of the pivot pin (412). The limiting bead (424) is usually made of a material with a certain elasticity. When the pivot pin (412) rotates 90°, the limiting bead (424) is squeezed and undergoes elastic deformation, thereby locking the pivot pin (412) in the positioning groove (423). There are four limiting beads (424), which are evenly distributed around the positioning groove (423).

5. The easily replaceable guide nozzle device according to claim 3, characterized in that: The upper end face of the positioning seat (2) is provided with a through hole (203), which is used to match the positioning post (411) and the pivot pin (412) to pass through. The size of the through hole (203) is adapted to the size of the positioning post (411) and the pivot pin (412) so that the positioning post (411) and the pivot pin (412) can pass smoothly through the through hole (203). The upper end of the through hole (203) is provided with a tapered hole (204), which is used to accommodate the fixing seat (414).

6. The easily replaceable guide nozzle device according to claim 1, characterized in that: The lower end of the guide nozzle body (3) is provided with a step, the step is fitted between the positioning seat (2) and the mounting seat (1), the lower end face of the step abuts against the upper end face of the mounting seat (1), and the upper end face of the step abuts against the upper end face of the relief groove in the positioning seat (2); a sealing ring is provided at the assembly surface of the positioning seat (2) and the guide nozzle body (3).

7. The easily replaceable guide nozzle device according to claim 4, characterized in that: The positioning pin (411) is inserted into the positioning hole (421), and the bottom surface of the positioning pin (411) abuts against the bottom surface of the positioning hole (421).

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